fountain pen

I write a letter with a fountain pen.

私は万年筆で手紙を書きます

I write a letter with a fountain pen filled with blue ink.

私は青い墨液を入れた万年筆で手紙を書きます

I write a letter with a fountain pen filled with blue ink in my room.

私は自分の部屋で青い墨液を入れた万年筆で手紙を書きます

I write a letter with a fountain pen filled with blue ink in my room tonight.

私は今夜自分の部屋で青い墨液を入れた万年筆で手紙を書きます

I write a letter with a fountain pen filled with blue ink in my room tonight together with my younger brother.

私は弟と一緒に今夜自分の部屋で青い墨液を入れた万年筆で手紙を書きます